A tired night

(After season 12) Residents of Pontypandy found wolf footprints in the area. It is feared that the herd may venture into the town as well, so Lizzie, Moose, Tom, Malacom, Rose and of course the firefighters are on constant alert. One day Sam and Penny embark on a discovery trip to the fort to explore the wolf hunting ground. Unfortunately, their tour ends in an accident. They are chased by wolves. Can they escape?
WARNING: characters do not belong to me.